Haemophilus influenzae as a respiratory pathogen.
D000328:Adult; D001987:Bronchiectasis / Q000382:microbiology; D001991:Bronchitis / Q000382:microbiology; D002648:Child; D006192:Haemophilus Infections; D006193:Haemophilus influenzae / Q000276:immunology / Q000472:pathogenicity*; D006801:Humans; D012141:Respiratory Tract Infections / Q000382:microbiology*